Classify each of the following as either macroscopic, microscopic or particulate: a. a red blood cell.
b. a sugar molecule.
c. baking powder.

Red blood cell is microscopic structure

Mercury atom is particulate

Liquid mercury is macroscopic

Explanation:

The three levels of organization is microscopic, macroscopic and particulate. The substances that can be seen by naked eyes is Macroscopic structures.

Example: Liquid mercury as it can be seen through naked eyes.

A mercury atom is a particulate matter which has not been sees by eyes or it can only be seen by electron microscope.

Red blood cells are very tiny and can be seen only in microscope.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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